<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Open File or Directory</title>
  </head>

  <body>
    <div class="section-wrapper">
      <h1>Use system dialogs</h1>

      <h3>
        The <code>dialog</code> module in Electron allows you to use native
        system dialogs for opening files or directories, saving a file or
        displaying informational messages.
      </h3>

      <p>
        This is a main process module because this process is more efficient
        with native utilities and it allows the call to happen without
        interrupting the visible elements in your page's renderer process.
      </p>

      <p>
        Open the
        <a href="https://electronjs.org/docs/api/dialog/">
          full API documentation (opens in new window)
        </a>
        in your browser.
      </p>
    </div>

    <div>
      <div>
        <h2>Open a File or Directory</h2>
        <div>
          <div>
            <button id="select-directory">View Demo</button>
            <span id="selected-file"></span>
          </div>
          <p>
            In this demo, the <code>ipc</code> module is used to send a message
            from the renderer process instructing the main process to launch the
            open file (or directory) dialog. If a file is selected, the main
            process can send that information back to the renderer process.
          </p>
          <h5>Renderer Process</h5>
          <pre>
          <code>
const {ipcRenderer} = require('electron')

const selectDirBtn = document.getElementById('select-directory')

selectDirBtn.addEventListener('click', (event) => {
  ipcRenderer.send('open-file-dialog')
})

ipcRenderer.on('selected-directory', (event, path) => {
  document.getElementById('selected-file').innerHTML = `You selected: ${path}`
})
          </code>
        </pre>
          <h5>Main Process</h5>
          <pre>
          <code>
const {ipcMain, dialog} = require('electron')

ipcMain.on('open-file-dialog', (event) => {
  dialog.showOpenDialog({
    properties: ['openFile', 'openDirectory']
  }, (files) => {
    if (files) {
      event.sender.send('selected-directory', files)
    }
  })
})
          </code>
        </pre>

          <div>
            <h2>ProTip</h2>
            <strong>The sheet-style dialog on macOS.</strong>
            <p>
              On macOS you can choose between a "sheet" dialog or a default
              dialog. The sheet version descends from the top of the window. To
              use sheet version, pass the <code>window</code> as the first
              argument in the dialog method.
            </p>
            <pre><code class="language-js">const ipc = require('electron').ipcMain
const dialog = require('electron').dialog
const BrowserWindow = require('electron').BrowserWindow


ipc.on('open-file-dialog-sheet', function (event) {
  const window = BrowserWindow.fromWebContents(event.sender)
  const files = dialog.showOpenDialog(window, { properties: [ 'openFile' ]})
})</code></pre>
          </div>
        </div>
      </div>
    </div>

    <script>
      // You can also require other files to run in this process
      require("./renderer.js");
    </script>
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